Experience

Experience can be depicted as a path in the network of all imaginable mental states. A mental state consists of all perceptions, thoughts, emotions and the contents of the long- and short-term memories at a single point of time - that is, a complete "snapshot" of a cognitive machine.

An assumed individual observer (or, a "self") follows one of the possible paths of experience - your life. You can also assume that your "self" has some freedom and ability to choose between the possible paths.

If a mental state were bound to a single deterministic universe, it would only have one possible path which eventually terminates at a point of death. However, in the infinite realm of ideas, each mental state is present in an infinite amount of imaginable universes, so you actually exist in all those universes which bear a duplicate of your mental state.

Some of the universes where you exist are extremely weird and bizarre. In some of them, Earth is flat and there is a highly succesful "round Earth conspiracy". In some others, you are a simulated character in a computer game. Fortunately, these universes are very rare in the set of possible universes, so your experience is more likely to follow the laws of the "less surprising" worlds.

It should be possible to consciously increase or decrease the probability of some universes by manipulating one's mental state.